The invention relates to a
tin furnace component used to PCBA board
soldering tin, in particular to a
tin furnace kettle orifice. The kettle orifice consists of a long and narrow rectangular main kettle orifice and at least two
branch kettle orifices which are arranged fixedly on sides of the main kettle orifice, end kettle orifices are arranged at both ends of the main kettle orifice, a tin overflow outlet is arranged at the concave circumference which consists of two adjacent
branch kettle orifices and the main kettle orifice, and a tin overflow is arranged at the joint of the main and
branch kettle orifices, and at the connected surface of the end kettle orifices and the main kettle orifice respectively, the overflow orifice is a rectangular opening, the deepness is 2-8mm. The invention has a simple structure, can improve the
soldering efficiency, is suitable for
mass automatic production, in addition, effectively prevents an
oxide layer of the tin liquid surface from remaining on the PCBA board, assures the
welding joint quality.